Computer Science for IGCSE & O level - Data Representation (Section 12 - No. 38)
What type of compression eliminates unnecessary data from a file, and the original file cannot be reconstructed once it has been compressed?
Lossless compression
Lossy compression
Run-length encoding
LZW compression
คำอธิบาย
Lossy compression discards data, making the original file unrecoverable.